Colts Safety Bob Sanders to Never Play Football Again?

Michael Lombardi of NFL.com reports that there is some concern Colts strong safety Bob Sanders might never be able to play football again, with his shoulder and bicep issues. He reduced his contract, but his rehab has been slow. The former NFL Defensive Player of the Year has only played in more than six regular season games twice (2005 and 2007) in his five years with the Colts, and even in their Super Bowl year, he only played four games during the regular season.